Doomsday | Grenzo, Dungeon Warden | Kiki-Jiki, Mirror Breaker

(and four other cards)

({4} magic symbol) ({B} magic symbol) ({B} magic symbol) ({B} magic symbol) ({R} magic symbol) available.

Cast
Doomsday by paying ({B} magic symbol) ({B} magic symbol) ({B} magic symbol) , searching your library and graveyard for
Torch Courier,
Kiki-Jiki,
Goblin Firestarter,
Brazen Buccaneers and
Conspicuous Snoop, exiling all other cards from your graveyard and library, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up.
Activate
Grenzo by paying ({2} magic symbol) , putting
Conspicuous Snoop into your graveyard and then onto the battlefield.
Cast
Torch Courier from the top of your library by paying ({R} magic symbol) .
Activate
Torch Courier by sacrificing it, giving
Conspicuous Snoop haste until end of turn.
Activate
Conspicuous Snoop using
Kiki-Jiki's ability by tapping it, creating a token copy of
Conspicuous Snoop with haste.
Repeat step 5 with the new
Conspicuous Snoop token an arbitrarily large amount of times.
Activate
Grenzo by paying ({2} magic symbol) , putting
Brazen Buccaneers into your graveyard and then onto the battlefield.
Brazen Buccaneers enters the battlefield, revealing
Kiki-Jiki, putting a +1/+1 counter on
Brazen Buccaneers and putting
Kiki-Jiki into your graveyard.
Activate a
Conspicuous Snoop using
Goblin Firestarter's ability by sacrificing it, dealing 1 damage to any target.
Repeat from step 9.